[kannmig]

https://www.musl-libc.org/

[saagarjha]

That doesn't fix the issues mentioned. (Whether it's an "alternative" stdlib for C is debatable; nobody ever said that glibc is "the" stdlib for C…)

[ftvy]

It is the de facto standard on Linux.

[pjmlp]

That doesn't make it the official implementation of ISO C, just one among many.

[Porthos9K]

Which Linux? There are plenty that use MUSL instead.

[hybrids]

musl is just another implementation of the true stdlib. I think what they want is an alternative to standard-conforming stdlibs that fills a similar niche - in other words, a "non-standard" standard library.